Lubricator



(No Model.)

A. W. WALKER.

LUBRIGATOR. No. 495,535.

Patented Apr. 18, 1893.

STATES PATENT OFFICE.

ALEXANDER W. WALKER, OF BOSTON, MASSACHUSETTS.

LUBRICATO R.

SPECIFICATION forming part of Letters Patent No. 495,535, dated April18, 1893. Application filed November 26, 1892. Serial No. 453,184. (Nomodel.)

To all whom it may concern: BeitknownthatI,ALEXANDERWNVALKER, a citizenof the United States, residing at Boston, in the county of Suifolk andState of Massachusetts, have invented certain new and usefulImprovements in Oil-Cups, of which the following, taken in connectionwith the accompanying drawings, is a specification.

This invention relates to improvements in oil cups and it is especiallywell adapted for velocipede bearings although it is equally useful forother bearings where lubrication is needed as will hereinafter be morefully shown and described, reference being had to the accompanyingdrawings, wherein Figure 1 represents a side elevation of the improvedoil cup. Fig.2 represents a bottom view of the same. Fig. 3 represents acentral longitudinal section of the oil cup. Fig. 4 represents asimilarlongitudinal section showing the cover swung open in filling thecup;

and Fig. 5 represents a cross-section on the line 55 shown in Fig. 3.

Similar letters refer to similar parts Wherever they occur on thedifferent parts of the drawings.

A represents the oil cup having a preferably externally screw threadedshank A in its lower end for the purpose of securing it to the bearingthat is to belubricated; the shank A has a central perforation A leadingfrom the interior of the cup A as is usual in devices of this kind.

B is the cover preferably provided with an annular lip B adapted to fitoutside of the upperopen end of the oil cup A as shown.

The cover Bis normally held closed against the upper end of the cup A bythe influence of a coiled spring 0, the upper end of which passesloosely through a central perforation b in the cover B, and terminatesabove the latter as a head or projection O resting on the top of saidcover B as shown in Figs. 3 and 4.

The lower end of the spring Gis secured in a suitable manner within thehollow shank A and for this purpose I prefer to make a longitudinalgroove a on the interior wall of the hollow shank A, which groove isadapted to receive the lower end of the spring 0 which is afterwardsoldered in said groove so as to leave an unobstructed passage for theoil through the conduit A. If so desired the lower end of the spring 0may be bent at a right angle and placed in a notch or recess in thelower end of the shank A as shown in Figs. 2, 3 and 4. The advantage ofthis construction is that the cover B may be turned around the top edgeof the cupAand around the upper end of the spring G without anyliability of twisting off said spring which would be the case if theupper end of the spring were fastened to the cover in one end and to thelower end of the cup in its other end.

When it is desired to fill the cup A, it is only necessary to tip thecover B, more or less against the upper edge of said cup A as shown inFig. 4 and hold it in such tipped position to allow the tube D of an oilcan to be introduced into the now open upper end of the cup A.

When the cup A is filled the operator adjusts the cover B in position asshown in Fig. 3 where it will be held by the influence of the spring Cuntil the cup needs refilling.

I am aware that oil cups have been made in which a spring has beenemployed for holding the cover in place, but in such cup the spring hasbeen secured to the cover and loosely connected to the lower shank,which is objectionable for the reason that the spring has to be turnedwith the cover, and as the lower end in such devices passes through thehollow shank it partially closes up the discharge opening of the cup.

In my device the cover may be turned around its axis without impartingany motion to the spring, and by securing the lower end of the spring tothe hollow shank its discharge opening is left free and unobstructed.

What I wish to secure by Letters Patent, and claim, is-

In combination with the oil cup A having a hollow shank A with aninternal groove or notch a, a cover B and a spring 0 pivoted in itsupper end to the cover, and secured within the grooved shank in itslower end, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 11th day of November, A.D. 1892.

ALEXANDER \V. \VALKER.

Witnesses:

ALBAN ANDREN, JOSEPH F. HANKINS.

